NUL-terminate converted file name.

--HG--
branch : HEAD

lib/zip_utf-8.c

diff --git a/lib/zip_utf-8.c b/lib/zip_utf-8.c
index c74b5eb..9b1f09e 100644
--- a/lib/zip_utf-8.c
+++ b/lib/zip_utf-8.c
@@ -205,7 +205,7 @@
     if (len == 0)
 	return NULL;
 
-    buflen = 0;
+    buflen = 1;
     for (i=0; i<len; i++)
 	buflen += _zip_unicode_to_utf8_len(_cp437_to_unicode[cp437buf[i]]);
 
@@ -219,5 +219,6 @@
 	offset += _zip_unicode_to_utf8(_cp437_to_unicode[cp437buf[i]],
 				       utf8buf+offset);
 
+    utf8buf[buflen-1] = 0;
     return utf8buf;
 }